Given the above information, which configuration is a better choice? At first, I was dead set on getting the LED 15'' with a 30'' Display. However, I just realized the 17'' can have the same resolution as a 23'' Display (another question is if I get this HD option can I still switch to the 1680 by 1050 if I want?). Still, the 17'' does not have LED . I wouldn't be able to afford the 17 and a 30'', but I could get an iPhone with it. I could also get a 15 and a 30'' (or an iPhone for that matter). So, which configuration is better and why? Thanks!